Region not visible on Checkout page

[schnere]

Preconditions and environment

• Magento version: 2.4.6-p3
• Multistore Enivronment
• Default Country for base store is set to DE, default country for substore is set to US
• DE is set to hide the region field. US is set to require the region.

Steps to reproduce

Add a product in US substore to cart, go to checkout shipping page.

Expected result

For US substore the region field should be displayed in checkout because the field is required.

Actual result

The region field is hidden.

Additional information

The problem is that the options for both countries are set to is_default. The issue is caused in this line: https://github.com/magento/magento2/blob/594a590b6f3821d49a3ecc98d5c4d5336a0b4d04/app/code/Magento/Directory/Model/ResourceModel/Country/Collection.php#L303

The region element then only checks the first country it finds with is_default set: https://github.com/magento/magento2/blob/594a590b6f3821d49a3ecc98d5c4d5336a0b4d04/app/code/Magento/Ui/view/base/web/js/form/element/region.js#L34

As DE is in alphabetical order before US this option will be used which causes the region field to be hidden.

Release note

No response

Triage and priority

• [ ] Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• [ ] Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• [ ] Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

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[schnere]

This patch solves the problem in my case:

diff --git a/vendor/magento/module-directory/Model/ResourceModel/Country/Collection.php b/vendor/magento/module-directory/Model/ResourceModel/Country/Collection.php
index d84b11fc..545db027 100644
--- a/vendor/magento/module-directory/Model/ResourceModel/Country/Collection.php
+++ b/vendor/magento/module-directory/Model/ResourceModel/Country/Collection.php
@@ -293,19 +293,14 @@ class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\Ab
      */
     private function addDefaultCountryToOptions(array &$options)
     {
-        $defaultCountry = [];
-        foreach ($this->storeManager->getWebsites() as $website) {
-            $defaultCountryConfig = $this->_scopeConfig->getValue(
-                \Magento\Directory\Helper\Data::XML_PATH_DEFAULT_COUNTRY,
-                ScopeInterface::SCOPE_WEBSITES,
-                $website
-            );
-            $defaultCountry[$defaultCountryConfig][] = $website->getId();
-        }
+        $defaultCountry = $this->_scopeConfig->getValue(
+            \Magento\Directory\Helper\Data::XML_PATH_DEFAULT_COUNTRY,
+            ScopeInterface::SCOPE_STORE
+        );

         foreach ($options as $key => $option) {
-            if (isset($defaultCountry[$option['value']])) {
-                $options[$key]['is_default'] = !empty($defaultCountry[$option['value']]);
+            if ($defaultCountry == $option['value']) {
+                $options[$key]['is_default'] = true;
             }
         }
     }

[m2-assistant[bot]]

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[engcom-November]

Hello @schnere,

Thank you for the report and collaboration!

Verified this issue on 2.4-develop. When the base store is set to DE where region is made hidden, and the sub store set to US with region as required. In the checkout page of sub store the region was not displayed.

Please take a look at the screenshot below:

Here it can be seen that region/state field is absent.

Hence confirming this issue.

Thank you.

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.adobe.com/browse/AC-11050 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-November. Thank you for verifying the issue.
Issue Available: @engcom-November, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.